XBeam2D Loads: Difference between revisions

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[[Documentation XBeam2D|BACK]]


===Beam Loads===


Beam loads are inserted in a local beam coordinate system. See [[Struct4U Design Arrangements | Design arrangement.]]


[[File:XBeam2DRibbonLoads.png|frameless|969x969px]]
[[File:XBeam2DBeamLoads1.png|frameless]]


Every load (node load, beam load or node displacements) are inserted per load case.
'''The dialog box shown below is opened.'''
[[File:XBeam2DBeamLoads2.png|none|frame]]


Load cases
'''Load case'''


Beam load
Choice for the load case. Here you can directly insert a new load case.


Node load


Node displacement
'''Type of load'''


=== Input of the load cases ===
Choose the type of load you want to add.
[[File:XBeam2DLoadCases.png|frameless|588x588px]]
{| class="wikitable"
|-
!Type!!Description
|-
|[[File:load-q.png|20 px|Wikipedia encyclopedia|link=http://68.183.11.126/index.php/File:Load-q.png]]||Even distributed load, or varying load
|-
|[[File:Load-F.png|20 px|Wikipedia encyclopedia|link=http://68.183.11.126/index.php/File:Load-F.png]]||Point force  - F-load
|-
|[[File:Load-M.png|20 px|Wikipedia encyclopedia|link=http://68.183.11.126/index.php/File:Load-M.png]]||Moment - M-load
|}'''q1'''


'''No.'''
The magnitude of the load. For the q-load the magnitude of the load at the beginning in kN/m. For a point load the amplitude of the load in kN. For a moment the magnitude of the load in kNm.


This number is generated automatically. You can not change this number
With plus min you can change the sign of the loads very easy. Standard the sign is at min because this is most common.




'''Description'''
'''q2'''


Free text to describe the load case
Only for the q-load the magnitude of the load at the end in kN/m.




'''Type'''
'''a'''


The type of load. Dependent on the type of load, standard combination factors psi0, psi1, and psi2 are determined according to the Eurocode.
The distance in mm where the load starts, counted from the begin node of the beam.  


These combination factors are offered as a standard by entering the load combinations. However, these values can be adapted.
'''L'''


Automatically two load combinations are generated. Permanent and variable loads.
Only for the q-load the length of the load should be inserted. Standard the load is going up to the end of the beam.


'''Automatically generate combinations'''


When you enter/change load combinations, the load combinations are automatically generated. You can also change these combinations and expand them.
'''Angle'''


=== Sequence load cases ===
Only for the q- and F-load. The angle in degrees to the perpendicular. The direction opposite to the clockwise direction is positive.
With a click on the right mouse button, the context menu shown below is opened. With these functions you can easily adapt the sequence of the load cases and/or insert load cases.


[[File:XBeam2DLoadCasesSequence.png|frameless]]


'''Insert'''
'''Beam angle'''


A new load case is created, and inserted above the current load case.
The angle in degrees with the global x-axis. The direction opposite to the clockwise direction is positive. With
[[File:XBeam2DBeamLoads4.png]]
You can take over the angle from the previous section.  




'''Delete'''
'''z'''


The load case is deleted, including all the loads
The distance in the z-direction in mm relative to the reference line. The reference line is adjustable. 'z relative to top', 'z relative to centerline', 'z relative to bottom'.


This distance is only relevant for lateral-torsional buckling resistance check .


'''Copy'''


The load case is copied, including all the loads
'''Table'''


 
Beam loads can also be added/changed in the table. It does not matter. It is also possible to change in between graphical input and numerical input via tables.
'''Move up/ move down'''
[[File:XBeam2DBeamLoads5.png|none|frame]]
 
A load can be moved up and down a line.
 
 
'''Copy loads from..'''
 
Every load from an already existing load case can be copied. The dialog box shown below is opened. Herein you choose the load case from which you want to copy the loads.  
 
=== Load combinations ===
[[File:XBeam2DLoadCombinations.png|frameless|830x830px]]
 
'''No.'''
 
This number is automatically generated. You can not change this number.
 
 
'''Description'''
 
Free text space to describe the load combination
 
 
'''Type'''
 
The type of load (ULS - ultimate limit state, ULS- fire, SLS-serviceability limit state, quasi permanent). Dependent on the type of combination, standard values for the combination factors (psi) and the load factor (gamma) are offered according to the Eurocode. But these values can be adapted.
 
 
'''Columns with load cases'''
 
For all the load cases, columns are created. In that way, a table appears in which all the combinations are shown. Every cell contains 2 values in the syntax : combination factor x load factor.
 
 
When you click on the cell the following dialog box appears. Here you can adapt both values.  
 
[[File:XBeam2DLoadCombinations2.png|frameless]]
 
 
For the combination factor and the load factor combo-boxes are offered including the standard values from which you can choose. You can also insert an own value. This gives a lot of freedom. If you for instance take one of the values as zero, the product of the two values obviously is zero as well. In that case the cell is showed 'empty'. This is only to make things clear.
 
 
Standard there are three load combinations generated. (ULS (6.10a), ULS (6.10b) and SLS)
 
=== Sequence load combinations ===
With a click on the right mouse button, the context menu shown below is opened. With these functions you can easily adapt the sequence of the load cases and/or insert load cases.
 
[[File:XBeam2DLoadCasesSequence.png|frameless]]
 
'''Insert'''
 
A new load combination is created and inserted above the current load case.
 
 
'''Delete'''
 
The load combination is deleted.
 
 
'''Copy'''
 
The load combination is copied.
 
 
'''Move up/ move down'''
 
A load combination can be moved up and down a line.
 
 
'''Copy ULS combination to SLS'''
 
Every load combination of the type ULS will be copied as type SLS. The load factors are set to 1.

Latest revision as of 08:52, 12 November 2022

BACK

Beam Loads

Beam loads are inserted in a local beam coordinate system. See Design arrangement.

XBeam2DBeamLoads1.png

The dialog box shown below is opened.

XBeam2DBeamLoads2.png


Load case

Choice for the load case. Here you can directly insert a new load case.


Type of load

Choose the type of load you want to add.

Type Description
Wikipedia encyclopedia Even distributed load, or varying load
Wikipedia encyclopedia Point force - F-load
Wikipedia encyclopedia Moment - M-load

q1

The magnitude of the load. For the q-load the magnitude of the load at the beginning in kN/m. For a point load the amplitude of the load in kN. For a moment the magnitude of the load in kNm.

With plus min you can change the sign of the loads very easy. Standard the sign is at min because this is most common.


q2

Only for the q-load the magnitude of the load at the end in kN/m.


a

The distance in mm where the load starts, counted from the begin node of the beam.

L

Only for the q-load the length of the load should be inserted. Standard the load is going up to the end of the beam.


Angle

Only for the q- and F-load. The angle in degrees to the perpendicular. The direction opposite to the clockwise direction is positive.


Beam angle

The angle in degrees with the global x-axis. The direction opposite to the clockwise direction is positive. With XBeam2DBeamLoads4.png You can take over the angle from the previous section.


z

The distance in the z-direction in mm relative to the reference line. The reference line is adjustable. 'z relative to top', 'z relative to centerline', 'z relative to bottom'.

This distance is only relevant for lateral-torsional buckling resistance check .


Table

Beam loads can also be added/changed in the table. It does not matter. It is also possible to change in between graphical input and numerical input via tables.

XBeam2DBeamLoads5.png
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